diff --git a/include/linux/uuid.h b/include/linux/uuid.h index 8e4a5000da036a4d73a30a751e9a2b5a4bfd9319..3780460a9a85e650772645b83fce2ea10e3510f7 100644 --- a/include/linux/uuid.h +++ b/include/linux/uuid.h @@ -84,6 +84,7 @@ static inline bool uuid_is_null(const uuid_t *uuid) } void generate_random_uuid(unsigned char uuid[16]); +void generate_random_guid(unsigned char guid[16]); extern void guid_gen(guid_t *u); extern void uuid_gen(uuid_t *u); diff --git a/lib/uuid.c b/lib/uuid.c index b6a1edb61d87b95c2c111ff852f98ac22b4df1ee..562d53977cabb99b84ad9dfb5a52440db260ed09 100644 --- a/lib/uuid.c +++ b/lib/uuid.c @@ -40,6 +40,16 @@ void generate_random_uuid(unsigned char uuid[16]) } EXPORT_SYMBOL(generate_random_uuid); +void generate_random_guid(unsigned char guid[16]) +{ + get_random_bytes(guid, 16); + /* Set GUID version to 4 --- truly random generation */ + guid[7] = (guid[7] & 0x0F) | 0x40; + /* Set the GUID variant to DCE */ + guid[8] = (guid[8] & 0x3F) | 0x80; +} +EXPORT_SYMBOL(generate_random_guid); + static void __uuid_gen_common(__u8 b[16]) { prandom_bytes(b, 16);